Electric-lamp socket.



F.'E. SEELBY. ELECTRIC LAMP SOCKET. urmoflrmn rum) DBO. 2a, 1909.

INVENTOR @M 4 Br M1 Patented M21125; 1913.

. 4 ATTORNEYS mars runs In Luv-c Hum-mm II c UNITED STATES PATENTOFFICE.

FRANK E. S EELEY, F BRIDG-EPORT, CONNECTICUT, ASSIG-NOR TO THE PERKINSELEC- TRIO SWITCH MANUFACTURING COMPANY, OF BRIDGEPORT, CONNECTICUT, A

CORPORATION OF CONNECTICUT. I

ELECTRIC-LAMP SOCKET.

Specification of Letters Patent Patented Mar. 25, 1913.

Application filed December 23, 1909. Serial No. 534,683..

To all whom it may concern Be it known that I, FRANK E. SEELEY, acitizen of the United States of America, residing in the city ofBridgeport, in the county of Fairiield, in the State of Connecti I cut,haveinvented certain new and useful Improvements in Electric-LampSockets, of

which the following is a specification.

a. sectional view on the line 1-1, Fig. 4, the

- the usual inclosing cap and shell being omitted; Fig. 2 is a sectionalview on the line 2- 2, Fig. 4; Fig. 3 is an inner faceiview showing thelamp-receivin terminals; Fig. ,4 is a plan x iew showing the upperinsulating block removed; Fig. 5 is an inner face view of the upperinsulatingblock; Fig. 6 is a sectional view on the line 6-6, Fig. 4;Fig. 7 isa perspective view of the central contact for the lamp base;Fig. 8 is a perspective view of the supportingbracket for t e switchmechanism and the binding post connected therewith.

Although my invention may be applied to sockets in which the insulatingbody is in one piece, it is especially useful and I have shown itapplied in the accompanyin drawing to the two-blockltype of socketorming the. subject of the Perkins Patent No. 626,927.

A is the upper block and B the lower block, which two blocks areheldtogether by the side-posts or brackets D and D Figs.

.1 and 4, with the aid of screws 10, 10, in-

. the lower block.

sorted through the back of the upper block,

andv screws 11 and 12 inserted from within.

the lamp-receiving screw shell S carried by The upper block has acentral inner .re'- cess a to receive a part of the switch-mechanism andmore particularly the spiral spring 13 and the upper part of theswitchsupporting-frame F. The main part of this frame F is containedwithin a chamber or recess in theupper face of the lower block and isconnected to 1t or has made in one or bracket and opposite ends of thecontact plate,

with it the bracket D before mentioned, and

which has a screw 01 for the attachment of one of the .wire terminals.This binding post the switch mechanism thus occupy one chamber formed byrecesses in the two blocks,-while the other binding post or bracket Dwhich carries the binding screw 03 for the other wire terminal iscontained in another chamber formed by recesses in the adjacent faces ofthe two blocks.

It will be seen that the binding screw cl is in electrical connectionwith the screw shell S by means of the securing screw 12,

whilethe screw 11,.which holds the lower" block and also the screw shellto the bracket D is insulated from the screw shell.

The switch spindleEpasses freely through slots 15, Fig. 8, in the twoarms of the frame F and is held therein moval by lugs 16, (Figs. 2 and4), punched up as usual from the spindle itself. The key spindle alsopasses through the switch block or cam G, being provided withprojections 17, Fig. 2,- within the cam to actuate the latter as usual,with lost motion.

Upon the upper part of the cam bears. a plate 14 pressed down by thespring 13 so as to retain the block G ineither the vertical orhorizontal position to which it may be turned. In the drawingI'haveshown the block G as in its vertical position to close the circuit-. Theblock B has a central rectangular opening I) through it for thepassageof the cam to enable the latter to come into contact with thecentral contact plate H, the

construction of which is best illustrated in Figs. 3 and 7 This contactplate liesbelow or on the inner face oftheinsulating disk fromlongitudinal re- 18, which rests again'st'the flange of the screw sh llS and the plate H is secured in place by headed bolts-19, (Figs. 4 and6), passing freely through openings in the lower "block B and secured bynuts 20 in recesses in the back of the block, Fig. 6. These securthroughopenings in the which spring tongue h ing bolts 19 pass has bent up fromit a against which the center contact or terminal I of the lamp basewill make contact when the lamp is screwed into the socket. This springtongue 7:. is formed originally in extension of the plate H. and joinedthereto by supporting legs which straddle the perforated securing lug,so that when the tongue h is angled As shown in Fig. 2,

back over the plate free access to the bolt 19 passing through thesecuring lug, is afforded. the insulation disk has a central openingcorresponding with the central opening'b in the block B for the passageof the cam G.

/ Bythe construction described I am able to get the parts of the socketwithin a smaller compass than usual.

I claim as. my invention:

1. In a key socket, the combination of a screw shell, and a keymechanism having a. contactcam with an insulating body to 'receive thekey mechanism and having a central opening from the chamber containingthe key' mechanism to within the screw shell, an insulating disk Withinthe screw shell,-also with an opening through it for the passage of thecam, and a contact plate for the cam held against the underside of saidinsulating disk.

2. In an electric lamp socket, a pair of insulating buttons and switchmechanism in- Gopies of this patent may be obtained for five cents each,by addressing closed between the same, said mechanism rying also abinding. screw, substantially as described.

3. In a device of the character described, a contact comprising a baseperforated to receive a securing screw and an integral contact tonguebent over said base and having an opening at the bend to permit freeaccess to the securing screw.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses.

I FRANK E. SEELEY.

Witnesses G. W. Goonnmon, A. H. JoNEs.

the "Commissioner of Patents.

Washington, D. O.

